8o 
DIPTERA 
76. *L. imicolor, VVinnertz, Verh. Zool.-bot. Ges. Wien, Vol. i3, p. 784 (2) Europe. 
{Glaphy) optera) (1864). 
wiicolor. Schiner, Fauna Aiistr. Dipt. Vol. 2, p. 457 (i) (Glaphyropteya) (1864). 
77. *L. Wiicolor, Walker, List Dipt. Brit. Mus. Vol. i, p. g3 (1848). 
78. *L. varia. Walker, ibidem, p. (1848). 
7g. '^L. ventralis, Say, Long's Exped. St. Peter's River. App. p. 364 (1824); 
Compl. Writ. Vol. i, p. 247 (1859). 
ventralis, Wiedemann, Aussereur. zweifl. Ins. Vol. i, 65 (2) (1828). 
80. *L. Winthemi, Lehman, Ins. Spec, nonnullse in agro Hainb. captae, 
p. 39 (1822). 
Winthemi, Winnertz, Verh. Zool.-bot. Ges. Wien, Vol. i3. p. 789 (9) [Gla- 
phyroptera) (i863); Schiner, Fauna Austr. Dipt. Vol. 2, p. 457 (2) 
(Glaphyroptera) (1864). 
maculipennis. Say, Long's Exped. St. Peter's River, App. p. 365 {2) (Myce- 
tophila) (1824): Compl. Writ. Vol. i, p. 248(2) (Mycetophila) (1859); 
Wiedemann, Aussereur. zweifl. Ins Vol. i, p. 66 (2) Mycetophila (1828). 
trifasciata. Walker, List Dipt. Brit. Mus. Vol. i, p. 93 (1848). 
The species marked with an asterisk belong without question to this genus, the others may 
belong; elsewhere. 
North America. 
North America. 
North America. 
Europe, North America, 
Sumatra. 
27. Genus CLASTOBASIS, Skuse 
Clastobasis. Skuse, Proc. Linn. Soc. N. S. Wales (2), Vol. 5, p. 617 (i8go). 
Characters. — Head roundish, flattened in the fore part, situated deep in the thorax; frorit 
broad, the anterior border produced triangularly, the point between the joints of the scapus ; vertex 
high; eyes oval; ocelli large, the middle one smaller, situated almost in line with but somewhat behind 
the other two; palpi prominent, four jointed, first joint small, second tolerably long and robust, third 
a little longer than the second, more slender, fourth very long and slender, about equal in length to the 
second and third combined; antennae slender, porrected, arcuated, 2-I-14 jointed; first joint of the 
scapus obconical, longer than the second, the second cupuliform, both setiferous at the apex, flagellar 
joints cylindrical, progressively diminishing in thickness, with minute downy pubescence. Thorax 
ovate, highly arched, hairy ; lateral border setiferous; scutellum lunate, setiferous; metanotum large, 
acclivous. Abdomen of the female seven segmented, narrowed at the base and towards the extremity, 
ovipositor short, thick, inconspicuous. Legs long and slender ; intermediate and hind femora modera- 
tely broad; tibise spurred, and with lateral spines; fore pair with some minute spines along the outer 
side, intermediate pair with two sparse rows of long spines on the outer and some very small spines on 
the inner side; hind pair with two sparse rows of very long spines and a row of very short spines on 
the outer side; in the hind legs the tibise and tarsi of about equal length. Wings a little longer than the 
entire body, moderately broad, with rounded off base, microscopically pubescent. Subcostal vein mo- 
deratel)' long, the apical two-thirds of its length very pale and indistinct, directed towards, but not 
reaching the costa ; Sca (subcostal crossvein) invisible; costal vein does not extend beyond the tip of the 
radial sector, terminating considerably before the tip of the wing; base of the radial sector beyond the 
middle of the wing, the basal cell R hence very long; media forks about under the base of the radial 
sector, its branches somewhat converging towards the tips, the anterior one reaching the margin much 
below the apex of the wing, anterior branch of the cubitus detached at the base, the base situated far 
before the base of the petiole of the media ; first anal vein long but incomplete, second anal vein a 
mere stump (PI. 6, Fig. I 4j. 
Type species : C. Tryouii, Skuse. 
